{"product_id":"filter-king-13-5x21-5x1-air-filter-4-pack-merv-8-performance","title":"Filter King 13.5x21.5x1 Air Filter 4-Pack - MERV 8 Performance","description":"\u003cp\u003eIn this review the Filter King 13.5x21.5x1 4-pack is evaluated as an affordable, no-frills replacement air filter for typical home HVAC systems. It is aimed at homeowners and renters who want a proven pleated filter with a \u003cstrong\u003eMERV 8\u003c\/strong\u003e rating and clear, made-in-USA construction. The single biggest reason to consider this pack is straightforward: a pleated media that captures more airborne particles than a flat panel while remaining easy to install and economical when changing filters every 30 to 90 days.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMERV 8 rating:\u003c\/strong\u003e Balances particle capture and airflow so common household dust, pollen and pet dander are reduced without overly restricting your system.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePleated design:\u003c\/strong\u003e Increases filter surface area to trap more particles and extend service life compared with non-pleated fiberglass panels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4-pack value:\u003c\/strong\u003e Supplies multiple replacements at once so routine 30- to 90-day changes are convenient and cost effective.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMade in USA:\u003c\/strong\u003e Fully manufactured domestically with an EPA establishment number noted for traceability and manufacturing consistency.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuick installation:\u003c\/strong\u003e Simple open, slide and close fit lets most users replace the filter in minutes without tools.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis filter set is best for homeowners and renters with standard 1 in filter slots who want reliable particle reduction without specialty HEPA performance. If you run central A\/C or a forced-air furnace and change filters seasonally or quarterly, the 4-pack makes ongoing maintenance straightforward.\u003c\/p\u003e\n\u003cp\u003eThose who need higher-efficiency filtration for severe allergies or medical needs should look for higher MERV or true HEPA solutions, and users whose systems require nonstandard thicknesses or exact nominal sizing larger than 13.5 x 21.5 x 1 in should confirm fit before purchase.\u003c\/p\u003e\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eGood balance of filtration and airflow with the \u003cstrong\u003eMERV 8\u003c\/strong\u003e media for general indoor air quality improvement.\u003c\/li\u003e\n\u003cli\u003ePleated construction captures more particles and can feel cleaner within 48 hours of use.\u003c\/li\u003e\n\u003cli\u003eMade in the USA and offered as a 4-pack for straightforward replacement scheduling and value.\u003c\/li\u003e\n\u003cli\u003eEasy installation process that most homeowners can complete quickly.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eActual thickness is 0.75 in rather than a full 1 in, so verify your slot accepts the slightly smaller actual size.\u003c\/li\u003e\n\u003cli\u003eNot intended for users who require ultra-high efficiency filtration for severe allergy or clinical needs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eFilter King\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal Size\u003c\/td\u003e\n\u003ctd\u003e13.5 x 21.5 x 1 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eActual Size\u003c\/td\u003e\n\u003ctd\u003e13.5 x 21.5 x 0.75 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMERV Rating\u003c\/td\u003e\n\u003ctd\u003eMERV 8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePack Quantity\u003c\/td\u003e\n\u003ctd\u003e4 filters\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMade In\u003c\/td\u003e\n\u003ctd\u003eUnited States (EPA Establishment 103501-FL-1)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRecommended Change Interval\u003c\/td\u003e\n\u003ctd\u003eEvery 30 - 90 days\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe Filter King 13.5x21.5x1 4-pack is a sensible, budget-friendly option for standard home HVAC maintenance: it offers \u003cstrong\u003eMERV 8\u003c\/strong\u003e pleated filtration, domestic manufacture and easy installation. It is good value for routine dust and pollen control, though users needing higher-efficiency filtration or an exact 1 in thick media should consider alternative options.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eIs this filter a true 1 in thickness?\u003c\/strong\u003e\u003cbr\u003eAnswer. The nominal thickness is listed as 1 in but the actual thickness is 0.75 in, so check that your filter slot accepts the slightly thinner actual size.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow often should these be replaced?\u003c\/strong\u003e\u003cbr\u003eAnswer. Filter King recommends changing 1 in filters every 30 to 90 days depending on household conditions; a 4-pack supports routine replacement cycles.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill this reduce dust and pet dander?\u003c\/strong\u003e\u003cbr\u003eAnswer. Yes, the pleated MERV 8 media captures common household dust, pollen and pet dander and should improve perceived air quality within a few days.\u003c\/p\u003e","brand":"Filter King","offers":[{"title":"Default Title","offer_id":48247828775131,"sku":"B0BJQQC7XM","price":55.86,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/71W0omJl4_L._AC_SL1500.jpg?v=1771067256","url":"https:\/\/gearmusthave.com\/products\/filter-king-13-5x21-5x1-air-filter-4-pack-merv-8-performance","provider":"GearMustHave","version":"1.0","type":"link"}